Download and unzip to the QM home folder. Import the qml file, or add it as shared file.

This is advanced filter, allows you to check any part of messages, including attachments. You must be familiar with string manipulation in QM. Some knowledge about programming with COM objects also is required.

This QM extension is included with QM versions below 2.1.8, so you maybe already have it in QM home folder or Installed Files subfolder. Nothing new has been added.